Shandong Homand Security Technology Co., Ltd.
Fireproof partition system
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Class C should have a fire resistance of 0.6 hours and is mainly used as a maintenance door for pipeline wells.
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A fireproof door is a movable fireproof partition. High fire-resistant fire doors are usually installed in firewalls, front rooms, corridors, and stairwells.
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They are mainly used at the door openings of fire compartments.
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Grade B requires a fire resistance of 0.9 hours.
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